The Sacramento Bicycle Kitchen and the Friends of Fremont Park held the first Sacramento Bicycle Swap in Midtown on Saturday. Dozens of people turned out to sell, buy, trade or just talk shop at Fremont Park. The swap offered a little of everything, from well-worn Bianchis to classic banana seats and cutting-edge bamboo machines. Danilo Masuelli and his crew from Masuelli Bicycles in Stockton were there to show off their sustainably built, locally grown bikes. The bamboo frames take 40 to 60 hours to make by hand and use bamboo grown in Rocklin, said Masuelli, a native of Argentina. While Asia has long had bikes made of bamboo, the Stockton shop is one of no more than four making bambo